O holy, holy Tetractys, thou that containest the root and source of the eternally flowing creation! For the divine number begins with the profound, pure unity until it comes to the holy four; then it begets the mother of all,

the allcomprising, allbounding, the first-born, the never-swerving,

the nevertiring holy ten, the keyholder of all»

Ierotelestia is a both a play and fantasia over Neo-Pythagoreanism, Hermetic, and other esoteric metaphysical belief systems. Where so-called ?divine truths? and «sacred knowledge», is concealed, hidden from us and is to be found in numbers, geometry, astronomy and music.

The term acousmatic was coined by French music theorist and composer Pierre Schaeffer for describing any sound where the cause of the sound remains unseen. The word itself is derived from the greek word akousmatikoi, (???????????? – «listeners») which was the name given to a particular sect of the Pythagorean mystery religion in ancient Greece.

According to the myth there where two groups of followers, the akousmatikoi and the mathematikoi (???????????). A veil separated these two groups: The mathematikoi, seated inside the veil, seeing their master lecturing and witnessing demonstrations; the akousmatikoi, seated outside the veil, were only entitled to hear their master, devoting themselves to rituals and rules according to their interpretations. Of what has been heard.